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Title: 熱間押出法によるマグネシウム合金の超ジュラルミン被覆と表面特性の評価
Other Titles: Coating on Magnesium Alloy with Super Duralumin by Hot Extrusion and Evaluation of Its Surface Properties
Authors: 徳永, 透子1 Browse this author →KAKEN DB
外本, 和嗣2 Browse this author
大野, 宗一3 Browse this author →KAKEN DB
松浦, 清隆4 Browse this author →KAKEN DB
Authors(alt): Tokunaga, Toko1
Sotomoto, Kazushi2
Ohno, Munekazu3
Matsuura, Kiyotaka4
Keywords: magnesium alloy
A2024 aluminum alloy
coating extrusion
aging treatment
corrosion resistance
Issue Date: 1-Aug-2017
Publisher: 日本金属学会
Journal Title: 日本金属学会誌
Journal Title(alt): Journal of the Japan Institute of Metals
Volume: 81
Issue: 8
Start Page: 389
End Page: 393
Publisher DOI: 10.2320/jinstmet.J2017019
Abstract: The poor corrosion resistance of Mg alloys, which is well known as one of the lightest structural metal materials, limits a wide use of these alloys. In order to dramatically increase not only the corrosion resistance but also the surface hardness of Mg alloys (AZ80), coating with A2024 Al alloy by hot extrusion has been attempted in this study. The coating was successfully realized by hot extrusion of a Mg alloy (AZ80) billet together with an Al alloy plate placed between the billet and the extrusion die. The A2024 Al alloy-coated Mg alloy exhibited an excellent corrosion resistance and no weight loss was observed after immersion in a 5 mass% HCl aqueous solution for 10 min while a weight loss of about 1500 g・m-2 was observed in case of AZ80 Mg alloy without coating under the same condition. The surface hardness of the coated alloy was increased to about 85 HV by aging for 144 h at room temperature after solution treatment for 3 h at 673 K
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 大野 宗一

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